reuben shaler



"UWE

t vBe it lnowngthat IQREUBEN `SHALER, of Madison, inthe county uofNew Haven, the State of Connecticut, "havefinvented a new t i andusefulImproyement,iirthe Machine for Separating` lGoldgf` I idd hereby declare that" the following is alwfullvand exact de- "scriptionf thereof, reference being had to `the i `accompanying `drawingsfand to theletters `ofjreference marked"lthereon".` y; j i `In the machines which separate gold by forcing away the impuritieswith wind the following `diiiicultytiseXhibited, but not"-A overcome, namely. Vhen astrong blast is employed so as to carry away the sand'and other coarse impurities much of the fine gold is alsoforcedawaygiandmlost, On the contrary, when a" moderate] blast is used, "too much of the coarseearthjlis depositedalong i with the gold in the receptacle boX. Hence "theutility ofmy invention.` `The nature of` which consists in `the employment "of a` I blower or fan, which produces twolblasts of L unequal force,o`rxpower, and an arrangement of mechanism, which exposes the fine "earth withthe ne particlesof gold, to a Iinoderateblast or currentof wind, and at `the same `time `exposes the coarser partkof vearth and gold? to a strong blast, and there` l `l by a perfect separa-tion is insured.

` ,To enable others skilledinthe art to make j i and"usemyinvention Iwill proceed to de- "scribe its'` construction and operation. `The framework and its lining, the hopper and the gear wheels also" the pitman and its Vconnectionslfor `"agitating the shelves are all like those of the common `fannng mill. f .The` blower A, `see the accompanying drawings `isfconstructed and adjusted in the machinein the common form, except `an alteration w'hichl makeQin each wing l, l, l, 1,by taking offrom the outeredgeabout two inches, `one half` the lengthof the wingcommencing at the'end, asshown in Figure 1Q "The, circular partition t, is attached vto the shoulders of thegwings-.is made lof sheet" `inetal`a1`id isinwidthI equal to the :strip "taken off 4frornfeach` wing and lits inner cir- 1 "cumference equals thelicircle described by. theshorter part `of"the\fans.` Or" a similar partitionmay bezmadeand permanently at-` xtached to the case j?, on itsinner sidefsotas'` tojinclose thelonger part of the fans l, l, `;1Fig.2.` H C 1 j y i E `The two sets of shelves or inclinedplanes *f,\are` adjustedinjlthe two endpieces 7L, `z.

D sfrATEs -rAgENr OFFICE. f

1 oRE-sEPARA'roR.-

. l `specificati@1cenetta@Patent No. 12,5ve,`dated March zo, 1855;`

i `and the partition-g.` These threepieces of board areattached' to each other atsuitable distances apart, by common mechanism. Thetwo sets of shelves, 3, 3, are adjusted in theirplaces by means of slots made in the end pieces It, and in the partition gf'- are placed one above another (three or more in number) about two inches apart, and are about `eight inches wide. When the frame containing the-two'sets ofobl-ique shelves is completed it is suspended inthe machine on pivots at K or in any suitable form, but its relative position with the blower, a,

shouldbe nearly as represented by Fig. 1,

and the inner edge o f the lower shelf should project about three inches beyond thatof the next one above it and so'on up through the whole set-both sets in this respect are alike. But it may be important in some cases to have the inclination than thev other. e

The screen M, is adjusted over the top shelves which is a screen made by perforating sheet .metal with holes of any de-` sirable size and has sides, forming a box about four inches high. This box extends over the whole of the surface of the two top shelve'sand hasa partition o, across its center, this partition is about one inch high. That part of the boX over the set. of shelves which front the short part of the fans 2,v 2, is perforated, and that part over the other set ofshelves has an aperture w, so large as to admit anything which may ever enter that` part of the box. This screen has an inclination toward the aperture. The openof one set, more ing in the hopper at 0, is directly over the perforated partof the screen.

Operation: By revolving the blower two currents of air are produced, the largerpartof the wings produces a powerful blast and the smaller a moderate blast, and the partition l) serves to 'keep the two blasts separate. The frame containing the two sets of shelves is agit-ated by the pitman s, and crank r. Tlieeartliwith which gold is miXedis put into the hopper, it descends to the screen m, where the finer portion of it passes" through the perforations and the lcoarser goes to the aperture, fw. Now that which passes throughthe perforations goes down on the shelvesA which are situated in quently is exposed to a moderate blast. But

that which goes through the aperture, fw

passes down on the set of shelves, fronting the large part of the wings, and is there eX- posed to a powerful blast and thus both the line and coarse earth is blown away, while the gold is deposited in the :receptacle boX u, situated under the edge of the two bottom shelves for that purpose. Copper may be separated in the same way as gold by this machine. The earth, or whatever impurities are to be forced away from the metal should be dry before it is put into the machine.

I disclaim the use of the screen m, except when used in combination with the two sets of shelves 3, 3, and the blower a which produces two blasts of unequal force.

I disclaim also the use of two Sets of shelves when used in combination with a blower of common construction.

lV hat I claim as my invention and desire to secure by Letters Patent-a The herein described combination of mechanism which separates the ne earth and small particles of gold from the coarse, and exposes the ner portion of impurities and gold to a moderate blast and the coarser portion to a more powerful blast. The said combination embraces the blower A, which produces two blasts, of unequal force. The two sets of shelves or inclined planes, 3, 3, and the screen m, or kits equivalent. combination I claim when the several parts are usedsubstantially as herein specified. REU'BENA SHALER. Witnesses:

J'osEPI-r N. DUDLEY, HENRY L. SHALER.

This 

